Problems with slim PS3

[memebras]

I have the ps3 80gb for 2 years and never had a single problem. Couple of months ago i purchased the new ps3 slim, and its been having problems every now and then. Just bought G.I.Joe and Chuck and neither works!
You put the disc in, it makes a loud noise after 3 seconds like it is going to another compartment and never plays the content.
If anyone has a dvd-changer or cd-changer, knows what i am talkin about. When you switch dics it makes a noise changing the disc, right?!. That is exactly the same noise i hear with the slim ps3. The majority of my blu rays, when you put a disc, it starts playing within 5 seconds, no noise. But some discs are not been played at all, it seems it does not recognize the BR disc and weird as it may seem it makes a loud noise like it sends the disc to another location..

Is anyone having the same problem?!